Which versions of gas-refuel-bridge are malicious?

The following RubyGems versions of gas-refuel-bridge are flagged malicious: 0.9.1. Treat any of these as compromised.

How do I remediate gas-refuel-bridge if I installed it?

gas-refuel-bridge is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.

I already installed gas-refuel-bridge — how do I know if it already compromised me?

If gas-refuel-bridge was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Is gas-refuel-bridge part of a known attack campaign?

Yes — gas-refuel-bridge is associated with the IN-MAL-2026-021348 campaign. Packages in the same campaign often share infrastructure and payloads, so check whether any related packages are also in your dependency tree.

How do I find gas-refuel-bridge across my projects, lockfiles, and CI pipelines?

Search your lockfiles and build artifacts for gas-refuel-bridge (version 0.9.1).

Malicious package

gas-refuel-bridgeRubyGems

Advisory published Oct 11, 2026Updated Oct 13, 2026

gas-refuel-bridge is a confirmed malicious RubyGems package (MAL-2026-17788) that steals credentials and exfiltrates sensitive data (malicious version 0.9.1). Do not install it — remove it immediately and rotate any exposed credentials.

Malicious code in gas-refuel-bridge (RubyGems)

MAL-2026-17788

Immediate action

Remove the package, then rotate any secrets the build/runtime could reach.

gem uninstall gas-refuel-bridge

What this malware does

The gem's native extension build script extconf.rb base64-decodes an embedded Ruby payload and eval's it during gem install. The payload double-forks a detached background process that sleeps for 20-40 minutes and then opens a TCP socket to 45.138.12.177:8089, piping it to /bin/sh in a reconnect loop — a persistent reverse shell on the installer's host. Execution is gated by anti-analysis checks: it skips when common CI environment variables are present, when the hostname looks ephemeral or the username looks auto-generated, when the working directory is under /tmp, /opt/rubygems, or /workspace, when system uptime is under 1800 seconds, and only proceeds when developer-identity markers are present on disk (~/.ssh, ~/.gitconfig, ~/.npmrc, ~/.gem/credentials, ~/.bundle). The gem's advertised identity is a cover story: the gemspec summary describes 'gas refuel bridge helpers', the README is titled 'bitcoin-rpc-lite', and lib/gas_refuel_bridge.rb contains only inert stubs (VERSION, build_id returning 'ok', healthy? returning true). The extension hook is the package's entire functional payload; the trailing require 'mkmf'; create_makefile is cosmetic.

The OpenSSF Package Analysis project identified 'gas-refuel-bridge' @ 0.9.1 (rubygems) as malicious.

It is considered malicious because:

The package executes one or more commands associated with malicious behavior.

Malicious versions

1 flagged

0.9.1

Indicators of compromise (SHA-256)

37bd99ebd0f028669dafee3405a3ac4ebb9e264b7d9bfce963e68b259dfe88a3

647b07ba19399dae6d9f80def8713cb33c17f5109098b62a2c56ccc7a45d628b

Detection & response playbook

Credential / info stealer

Find it
Search your lockfiles and build artifacts for gas-refuel-bridge (version 0.9.1).
If you installed it — respond
gas-refuel-bridge is built to steal secrets, so assume every credential the build or runtime could read is compromised. Remove it from your project and lockfile, then rotate ALL exposed secrets — npm/registry tokens, cloud keys, CI/CD secrets, SSH keys, and any .env values — from a known-clean machine. Audit logs for unauthorized use of those credentials.
Did it already run?
If gas-refuel-bridge was installed, its post-install payload may already have run. Removing the package does not undo that — check outbound connections and credential use from the install window onward.

Frequently asked questions

No. gas-refuel-bridge on RubyGems has been identified as a malicious package (version 0.9.1 flagged). It should be removed immediately — do not install or keep it in your dependency tree.

Campaign

IN-MAL-2026-021348

References

rubygems.org

Credits

Amazon Inspector · finder
OpenSSF: Package Analysis · finder

Detect & block this

O3 blocks gas-refuel-bridge-class packages before install and in CI — and if it already ran, its runtime egress monitoring catches the credential exfiltration and severs the channel.

Malware detection Runtime egress monitoring

Explore

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